槽式腔体接收器多场耦合热性能模拟研究  

Simulation research on multi-field coupling thermal performance of trough-cavity receiver

作　　者：王志敏[1,2] 杨畅 产文武 袁拓 王海博 Wang Zhimin;Yang Chang;Chan Wenwu;Yuan Tuo;Wang Haibo(College of Energy and Power Engineering,Inner Mongolia University of Technology,Hohhot 010051,China;Inner Mongolia Renewable Energy Key Laboratories,Hohhot 010051,China;College of Civil Engineering,Inner Mongolia University of Technology,Hohhot 010051,China)

机构地区：[1]内蒙古工业大学能源与动力工程学院,内蒙古呼和浩特010051 [2]内蒙古自治区可再生能源重点实验室,内蒙古呼和浩特010051 [3]内蒙古工业大学土木工程学院,内蒙古呼和浩特010051

出　　处：《可再生能源》2022年第9期1149-1156,共8页Renewable Energy Resources

基　　金：国家自然科学基金项目(52166016);内蒙古自治区自然科学基金(2020LH05016);内蒙古工业大学科学研究项目(ZZ201907);内蒙古工业大学博士基金(BS201932);内蒙古高校科研项目(NJZY21334)。

摘　　要：文章针对一种槽式太阳能利用的倒梯形腔体接收器,采用ANSYS软件对腔体倾角、工质进口温度、环境风速变化造成的接收器热性能影响进行了模拟研究,并采用多场耦合的方式对其进行分析。结果表明:无风时,各管出口温度的变化趋势与腔体倒梯形结构相吻合,且进口温度T_(in)为353 K时的腔体热损失量是303 K时的6.9倍;腔体倾角θ_(cav)为30°,T_(in)为353 K时,中间管受扰流影响程度随风速增大逐渐减小,且风速V_(w)为3.0 m/s时的总热损失量是0.8 m/s时的2.8倍;在腔体变倾角研究中,当T_(in)为353 K,V_(w)为1.5 m/s,θ_(cav)为90°时的热损失是0°时的12倍。Based on working principle of the trough solar concentrating and heat collecting system,it is very important that the design and selection of the cavity.And hence,it is necessary to conduct in-depth research on the cavity structure and its thermodynamic properties.Aiming at a trough-type inverted trapezoidal cavity,this study uses ANSYS software to simulate the influence of the cavity's thermal performance caused by changes in the cavity tilt angle,working fluid inlet temperature,and ambient wind speed.The heat transfer and heat loss performance are analyzed utilizing multi-field coupling.The study results show that when there is no wind,the heat loss of the cavity at the inlet temperature T_(in)=353 K is 6.9 times that of T_(in)=303 K.The cavity tilt angleθ_(cav)=30°and T_(in)=353 K,the total heat loss at a wind speed of 3.0 m/s is 2.8 times that at 0.8 m/s.In the cavity variable tilt angle study,when the inlet temperature T_(in)=353 K,wind speed V_(w)=1.5 m/s,the heat loss when θ_(cav)=90°is 12 times that of θ_(cav)=0°.

关 键 词：槽式集热 腔体 线聚焦 热损失 数值模拟 

分 类 号：TK51[动力工程及工程热物理—热能工程]